[cdell123]

Hi all,

First time builder, I can't get the system to boot using all 4 sticks of ram. I'm confidant that its not a memory problem, As I can use any of the three sticks and it boots correctly. Also, I can use any of the 4 slots and it still boots and runs correctly. When I put the 4th stick in, the motherboard beeps once (like normal) but then sits at the motherboard's logo screen for about 10 seconds until it resets and does it again. (The same situation that happened before I had an o.s. installed, and I ended up removing a stick to get it to boot from the cdrom)

Memtest was successful on each stick of ram individually, as well as each dimm individually.

I'm new to any bios tweaking so I don't want to change anything with minimal knowledge.

Here are my specs:

EP45-UD3P BIOS Version F8

Core 2 Quad Q9550 Revision E0 (Stepping A)

The RAM is Corsair Dominator CM2X1024-8500C5D (all 4 sticks)

GPU Diamond 3850 512mb

Windows Vista Ultimate 32-bit

Also the RAM's max bandwidth (in EasyTune) is listed as pc26400, but I'de rather get all dimms working before I address that issue.

Thanks in advance. Let me know what other information I can give you to be helpful.

Heres a link to another forum which I have asked for help. (there are 2 pages)

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I have read through your thread in the other forum...

What speed do you have the ram set at... stock setting is 1066mhz. but sometimes when you fully populate the DIMMS and keep the max settings the Memeory controller has a hard time functioning properly... if the speed is set to 1066mhz, change the setting to 800mhz...

Try this it may help.

Cbarnard

[cbarnard]

I have read through your thread in the other forum...

What speed do you have the ram set at... stock setting is 1066mhz. but sometimes when you fully populate the DIMMS and keep the max settings the Memeory controller has a hard time functioning properly... if the speed is set to 1066mhz, change the setting to 800mhz...

Try this it may help.

Cbarnard

[cdell123]

Hey, I'll see what I can do about that when I get home from work. But to note, CPU-Z has stated that my memory is only running at 800mhz (although in the bios it is set to 1066).

[diabillic]

I assume that all the settings in the BIOS are set to default correct?

That particular RAM is listed as being supported in the QVL, so it shouldn't be a problem. Also, if everything is set to default, try downclocking the RAM as suggested already.

[cdell123]

Yes, I've tried default (1.8v, 5-5-5-15) and I've tried setting it to the Corsair Specs (2.1v, 5-5-5-15). Neither of which have worked, but I'll try downclocking.